Transport properties of hierarchical micro-mesoporous materials

被引:231
作者
Schneider, Daniel [1 ]
Mehlhorn, Dirk [1 ]
Zeigermann, Philipp [1 ]
Kaerger, Joerg [1 ]
Valiullin, Rustem [1 ]
机构
[1] Univ Leipzig, Fac Phys & Earth Sci, D-04109 Leipzig, Germany
关键词
FIELD GRADIENT NMR; NUCLEAR-MAGNETIC-RESONANCE; PHYSICAL ADSORPTION CHARACTERIZATION; DEPENDENT SELF-DIFFUSION; LONG-RANGE DIFFUSION; LARGE-PORE ZEOLITES; MOLECULAR-DIFFUSION; SURFACE BARRIERS; NANOPOROUS MATERIALS; MASS-TRANSFER;
D O I
10.1039/c5cs00715a
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Adding mesopore networks in microporous materials using the principles of hierarchical structure design is recognized as a promising route for eliminating their transport limitations and, therefore, for improving their value in technological applications. Depending on the routes of physico-chemical procedures or post-synthesis treatments used, very different geometries of the intentionally-added transport mesopores can be obtained. Understanding the structure-dynamics relationships in these complex materials with multiple porosities under different thermodynamical conditions remains a challenging task. In this review, we summarize the results obtained so far on experimental and theoretical studies of diffusion in micromesoporous materials. By considering four common classes of bi-porous materials, which are differing by the inter-connectivities of their sup-spaces as one of the most important parameter determining the transport rates, we discuss their generic transport properties and correlate the results delivered by the equilibrium and non-equilibrium techniques of diffusion measurements.
引用
收藏
页码:3439 / 3467
页数:29
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